Examine source code of Todo_Extension

{
  "manifest_version": 3,
  "name": "Todo Extension",
  "Author": "Samuel Jogi",
  "version": "2.0",
  "description": "A cool browser extension that let's you to do daily tasks",
  "chrome_url_overrides": {
    "newtab": "/index.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "@extension-Samuel",
      "strict_min_version": "58.0"
    }
  }
}